There has been an assumption about the link between auditory imagery and performance, which is related to the reports of accurate singers experiencing vivid auditory imagery. Auditory image pitch detection studies have shown that response time decreases when judging two high pitches as opposed to judging two low pitches. People are able to improve their discrimination of pitch however, they cannot improve their detection. The development of cultivating an auditory image with absolute pitch, which is being able to determine a note upon hearing a sound, however, is dependent on childhood musical training and genetic factors. Humans retain a relatively strong auditory image for details in pitch, which can be improved with musical training. However, if someone had musical training then the person has more flexibility in his or her auditory imagery tempo representations. Therefore, the tempo structure of the melody is preserved in the auditory image. Experiments like this have shown it takes longer to compare the pitches of two words if the space between the two words is larger. For instance, people can sing through " Jingle Bells" in their head and determine if there is a difference in pitch between the word 'Snow' and 'Sleigh'. This was shown by having subjects compare the pitch of two words in a song. When surveying subject's auditory imagery, their sense of tempo usually stays within 8% of the original tempo heard in a song that the subject heard at some point in the past. The accuracy of tempo within an auditory image usually suffers when recalled however, the consistency of a person's perception of tempo is preserved. These studies have been able to recently gain confirmation and recognition due to the arrival of Positron emission tomography and fMRI scans that can confirm a physiological and psychological correlation. Through all of the research developed to understand auditory imagery behavioral neuroscientists have found that the auditory images developed in subjects' minds are generated in real time and consist of fairly precise information about quantifiable auditory properties as well as melodic and harmonic relationships. The vividness and detail of auditory imagery can vary from person to person depending on their background and condition of their brain. This modality of mental imagery differs from other sensory images such as motor imagery or visual imagery. This form of imagery is broken up into a couple of auditory modalities such as verbal imagery or musical imagery. Auditory imagery is a form of mental imagery that is used to organize and analyze sounds when there is no external auditory stimulus present.
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